// Copyright (c) 2013, Hannes Würfel <hannes.wuerfel@student.hpi.uni-potsdam.de>
// Computer Graphics Systems Group at the Hasso-Plattner-Institute, Germany
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//   * Neither the name of the Computer Graphics Systems Group at the
//     Hasso-Plattner-Institute (HPI), Germany nor the names of its
//     contributors may be used to endorse or promote products derived from
//     this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

#ifndef TRUNCATED_ABUFFER_EFFECT_H
#define TRUNCATED_ABUFFER_EFFECT_H

#include "OITEffect.h"

class TruncatedABufferEffect : public OITEffect
{
public:
    TruncatedABufferEffect(ID3D11Device* device, const std::string& filename);
    ~TruncatedABufferEffect();

    ID3DX11EffectTechnique* storeFragmentsTech();
    ID3DX11EffectTechnique* sortFragmentsTech();

    void setBackgroundTexture(ID3D11ShaderResourceView* tex);
    void setViewportWidth(int viewportWidth);
    void setInputHeadPointerBuffer(ID3D11ShaderResourceView* buf);
    void setInputNodesBuffer(ID3D11ShaderResourceView* buf);
    void setOutputHeadPointerBuffer(ID3D11UnorderedAccessView* buf);
    void setOutputNodesBuffer(ID3D11UnorderedAccessView* buf);

protected:
    ID3DX11EffectTechnique* m_storeFragmentsTechnique;
    ID3DX11EffectTechnique* m_sortFragmentsTechnique;

    ID3DX11EffectScalarVariable* m_viewportWidth;
    ID3DX11EffectShaderResourceVariable* m_backgroundTex;

    ID3DX11EffectShaderResourceVariable* m_headPointerBufferSRV;
    ID3DX11EffectShaderResourceVariable* m_nodesBufferSRV;
    ID3DX11EffectUnorderedAccessViewVariable* m_headPointerBufferUAV;
    ID3DX11EffectUnorderedAccessViewVariable* m_nodesBufferUAV;
};

#endif // TRUNCATED_ABUFFER_EFFECT_H